ESPE Abstracts

Introduction: Osteogenesis imperfecta (OI) is a rare heterozygous disorder of collagen production. It is characterized by low bone mass, bone fragility, blue sclera, and progressive hearing loss. Expanded Sillence Classification divides OI into 7 types with Type I OI as the mildest and commonest form. Hyperplastic callus (HC) is a rare but characteristic complication in patients with OI type V. We report a infant with Type I OI with hyperplastic callus.<p ...

Turner syndrome is the most common chromosomal disorder in girls. They present classically short stature and delayed puberty. Turner girls with 45,X karyotype show normal female external genitalia. But Turner patients containing 45,X/46,XY mosaicism, or Sex-determining Region Y(SRY) gene may have mixed gonadal dysgenesis with various external sexual differentiation or pure gonadal dysgenesis. Existence of Y chromosome particles in Turner syndrome implies that they have risk of...

Introduction: Allan–Herndon–Dudley syndrome is a rare X-linked inherited disorder characterized by, axial hypotonia, weakness, and severe intellectual disability1 Allan-Herndon-Dudley syndrome is caused by mutations in the SLC16A2 gene (also known as MCT8) This gene is located on the chromosome Xq13.2, mutations of the SLC16A2 gene lead to impaired making a protein that transports thyroid hormone triiodothyronine (T3) into nerve cells, for this re...

Purpose: To track the effects of growth hormone on bone geometry and maturation in children with isolated growth hormone deficiency (GHD).Methods: 299 left hand X-rays from 77 short prepubertal children (54 boys and 23 girls) with isolated GHD were analysed for changes in metacarpal thickness, width, length, medullary diameter, the Bone Health Index (BHI) and bone age (BA) from one year preceding until four years after s...

Background: Turner syndrome (TS) is a common genetic disorder with an incidence of 1 in 2500 live births due to chromosomal errors resulting in monosomy for the X chromosome with or without mosaicism. Familial TS has been rarely reported. We report two families having TS.Methods: We report 6 patients with TS who had been referred to the Endocrinology department and Pediatric department at Hedi Chaker hospital, Sfax, Tuni...

Introduction: Congenital adrenal hypoplasia, a rare cause of childhood primer adrenal insufficiency, is caused by defects in transcription factors involved in the development of adrenal gland. One of them is the NROB1 (DAX1) gene, localized in Xp21.2. DAX1 mutations have been identified that cause X-linked adrenal hypoplasia congenita. Infants affected with X-linked adrenal hypoplasia congenita may present with salt-wasting, micropenis or cry...

Introduction: Mitchell Riley syndrome is a rare autosomal disorder, characterized by severe neonatal diabetes associated with hypoplastic or annular pancreas, duodenal or jejunal atresia, intestinal malrotation, gallbladder hypoplasia or agenesis, and cholestatic disease, less common features were reported such as severe neonatal anemia, hemochromatosis and biliary atresia.Mitchell-Riley syndrome is caused by a mutation in regulatory fac...

Background and Aims: Turner Syndrome (TS), 45X0, is the most common chromosomal pathology affecting females, occurring in 1:2500 to 1:5000 female infants. The typical phenotype includes short stature, gonadal dysgenesis leading to sexual infantilism, low-set ears, low rear hairlin, mamary hypertelorism, neck webbing, gothic palate, irregular rotation of the elbows, shield chest, shortening of the 4th metacarpal, low hairline, shortening of lower extremities, renal disorders a...

Background: Klinefelter Syndrome (KS) is the most common sex chromosome disorder in males caused by additional X chromosome. It is characterized by progressive testicular failure. KS patient usually have complete male sexual differentiation without genital ambiguity. The prevalence of KS is 1 in 660 males which only 10% are detected before or during puberty, and about two third so fall men with X-chromosome polyploidies fail to be identified during their lifetime.<p class=...

Background: Congenital central hypothyroidism (CeH) may occur isolated, or in combination with other pituitary hormone deficiencies. Although a third causative gene for CeH was recently reported (IGSF1), the aetiology of isolated CeH has remained unexplained in most cases.Objective and hypotheses: We hypothesized that in three relatives with unexplained isolated CeH a mutation in another gene might be responsible for the phenotype.<p class="...